The RMA Quality Planning Resource

Specific environment

Critical health effect(s)

Leq [dBA]

Time base [hours]

Lmax, fast [dBA]

Outdoor living area

Serious annoyance, daytime and evening

55

16

-

Moderate annoyance, daytime and evening

50

16

-

Dwelling, indoors

Speech comprehension and moderate annoyance, daytime and evening

35

16

45

Inside bedrooms

Sleep disturbance, night-time

30

8

45

Outside bedrooms

Sleep disturbance, window open (outdoor values)

45

8

60

School class rooms and pre-schools, indoors

Speech intelligibility,
disturbance of information extraction,
message communication

35

during class

-

Pre-school
bedrooms, indoors

Sleep disturbance

30

sleeping-time

45

School, playground outdoor

Annoyance (external source)

55

during play

-

Hospital, ward rooms, indoors

Sleep disturbance, night-time

30

8

40

Sleep disturbance, daytime and evenings

30

16

-

Hospitals, treatment rooms, indoors

Interference with rest and recovery

#1

 

 

Industrial, commercial
shopping and traffic areas, indoors and
outdoors

Hearing impairment

70

24

110

Ceremonies, festivals and entertainment events

Hearing impairment (patrons:<5 times/year)

100

4

110

Public addresses, indoors and outdoors

Hearing impairment

85

1

110

Music through headphones/
earphones

Hearing impairment (free-field value)

85 #4

1

110

Impulse sounds from toys, fireworks and firearms

Hearing impairment (adults)

-

-

140 #2

Hearing impairment (children)

-

-

120 #2

Outdoors in parkland and conservation areas

Disruption of tranquillity

#3

 

 

#1: as low as possible

#2: peak sound pressure (not Lmax, fast), measured 100 mm from the ear

#3: existing quiet outdoor areas should be preserved and the ratio of intruding noise to natural background sound should be kept low

#4: under headphones, adapted to free-field values